Original Manshoom vs Clone Manshoon
So, I am expanding on dragon heist and want to make it possible to get my players to level 10 by expanding the plotlines and really growing the homebrew element of it. My plan is to have Casslanters as the central villain in the first act for levels 1 to 3, scaling them down to basically act as the baddies for the party to grow a rep in the city by contending with corrupt nobles. The Xanthar and Jarlaxle for the 2nd act for levels 4-6, which would be the dragon heist focus and gathering the eyes of galorr. Zhentarim would still play a role here, but they are on the defensive and are more focused ln a greater plot going on in the background. My final act would be levels 7-10, and deals with the actions of the party as they contend with Manshoons goals to usurp Laurel and become a new leader of Waterdeep from the chaos from the previous two acts.
An idea I wanted to explore is the Clone manshoon basically leading these previous villains as a disillusioned clone, wanting to bring chaos to the city after coming to the conclusion his life doesnt matter after facing Halaster Blackcloak. The real manshoon and the Black Network, which is my idea of separating them from the Zhents under the Clone, are wanting to maximize this chaos to seize control of the city and bring order to it. For character reference, the real Manshoon im inspired by Doctor Doom meets Tommy Shelby from Peaky Blinders, while the Clone has Joker meets Ras Al Ghoul from the Dark Knight, a hybrid of chaos yet intent on bringing the world down around him because he knows how it was built.
I was wondering if this sounds like a reasonable escalation of a final act, since Manshoon seems the most dangerous of the foes and it would give him an interesting buildup of seeing dual natured villain? I also was toying with the idea real Manshoon can use the party's actions against them, forcing them underground and turning them into vigilantes like from the Daredevil tv show and similar media.
There are other factors i aim to throw in this final act, such as a Black Oblesik connecting to a grander 10-20 campaign. There is an agent of Vecna who may be pulling the strings the whole time, alongside a time dragon since they sound cool and Manshoon actually has a draconic daughter but its not disclosed what species. Lastly, dagult neverember himself gets involved, since I thought it be cool Manshoon has an hidden contract with Dagult due to them both being ambitious figureheads more intent on order then being moral.